org.apache.parquet.schema

Class Type

java.lang.Object

org.apache.parquet.schema.Type

Direct Known Subclasses:

GroupType, PrimitiveType

public abstract class Type
extends Object

Represents the declared type for a field in a schema. The Type object represents both the actual underlying type of the object (eg a primitive or group) as well as its attributes such as whether it is repeated, required, or optional.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Type.ID represents a field ID
static class	Type.Repetition Constraint on the repetition of a field

Constructor Summary

Constructors

Constructor and Description
Type(String name, Type.Repetition repetition) Deprecated.
Type(String name, Type.Repetition repetition, OriginalType originalType) Deprecated.

Method Summary

Modifier and Type	Method and Description
abstract void	accept(TypeVisitor visitor) Visits this type with the given visitor
GroupType	asGroupType()
PrimitiveType	asPrimitiveType()
protected abstract boolean	containsPath(String[] path, int depth)
protected boolean	eqOrBothNull(Object o1, Object o2)
boolean	equals(Object other)
protected boolean	equals(Type other)
Type.ID	getId()
protected abstract int	getMaxDefinitionLevel(String[] path, int i)
protected abstract int	getMaxRepetitionLevel(String[] path, int i)
String	getName()
OriginalType	getOriginalType()
protected abstract List<String[]>	getPaths(int depth)
Type.Repetition	getRepetition()
protected abstract Type	getType(String[] path, int i)
int	hashCode()
abstract boolean	isPrimitive()
boolean	isRepetition(Type.Repetition rep)
String	toString()
protected abstract boolean	typeEquals(Type other) Deprecated.
protected abstract int	typeHashCode() Deprecated.
protected abstract Type	union(Type toMerge)
protected abstract Type	union(Type toMerge, boolean strict)
abstract Type	withId(int id)
abstract void	writeToStringBuilder(StringBuilder sb, String indent) Writes a string representation to the provided StringBuilder

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Type

@Deprecated
public Type(String name,
                        Type.Repetition repetition)

Deprecated.

Parameters:

name - the name of the type

repetition - OPTIONAL, REPEATED, REQUIRED

Type

@Deprecated
public Type(String name,
                        Type.Repetition repetition,
                        OriginalType originalType)

Deprecated.

Parameters:

name - the name of the type

repetition - OPTIONAL, REPEATED, REQUIRED

originalType - (optional) the original type to help with cross schema conversion (LIST, MAP, ...)

Method Detail

withId

public abstract Type withId(int id)

Parameters:

id - an integer id

Returns:

the same type with the id field set

getName

public String getName()

Returns:

the name of the type

isRepetition

public boolean isRepetition(Type.Repetition rep)

Parameters:

rep - repetition level to test

Returns:

if repetition of the type is rep

getRepetition

public Type.Repetition getRepetition()

Returns:

the repetition constraint

getId

public Type.ID getId()

Returns:

the id of the field (if defined)

getOriginalType

public OriginalType getOriginalType()

Returns:

the original type (LIST, MAP, ...)

isPrimitive

public abstract boolean isPrimitive()

Returns:

if this is a primitive type

asGroupType

public GroupType asGroupType()

Returns:

this if it's a group type

Throws:

ClassCastException - if not

asPrimitiveType

public PrimitiveType asPrimitiveType()

Returns:

this if it's a primitive type

Throws:

ClassCastException - if not

writeToStringBuilder

public abstract void writeToStringBuilder(StringBuilder sb,
                                          String indent)

Writes a string representation to the provided StringBuilder

Parameters:

sb - the StringBuilder to write itself to

indent - indentation level

accept

public abstract void accept(TypeVisitor visitor)

Visits this type with the given visitor

Parameters:

visitor - the visitor to visit this type

typeHashCode

@Deprecated
protected abstract int typeHashCode()

Deprecated.

typeEquals

@Deprecated
protected abstract boolean typeEquals(Type other)

Deprecated.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

protected boolean equals(Type other)

equals

public boolean equals(Object other)

Overrides:

equals in class Object

eqOrBothNull

protected boolean eqOrBothNull(Object o1,
                               Object o2)

getMaxRepetitionLevel

protected abstract int getMaxRepetitionLevel(String[] path,
                                             int i)

getMaxDefinitionLevel

protected abstract int getMaxDefinitionLevel(String[] path,
                                             int i)

getType

protected abstract Type getType(String[] path,
                                int i)

getPaths

protected abstract List<String[]> getPaths(int depth)

containsPath

protected abstract boolean containsPath(String[] path,
                                        int depth)

union

protected abstract Type union(Type toMerge)

Parameters:

toMerge - the type to merge into this one

Returns:

the union result of merging toMerge into this

union

protected abstract Type union(Type toMerge,
                              boolean strict)

Parameters:

toMerge - the type to merge into this one

strict - should schema primitive types match

Returns:

the union result of merging toMerge into this

toString

public String toString()

Overrides:

toString in class Object